This is from a thread about Remington barrel markings on rimfirecentral.com. They are specifically discussing the heart shaped stamp. No idea if this helps..

“ 'Heart shape' in bbl. code

driver69911 - to add a bit more to what edlmann mentions above, the 'heart shaped' proof mark is the Final Inspector Proof during that timeframe. If yours looks like the pic below:”.

https://www.rimfirecentral.com/threa...stamps.494462/

Yes, it’s true that Remington used a higher grade of wood on the lower grades.





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It is my understanding that any stamp on the barrel flats was the “final” stamp of the worker or inspector fot a particular function in that step of production.

Further, re the R.E.P. stamp, I don’t believe I’ve seen it on any more than two or three Remington Parkers.

And I don’t believe these stamps apply to Parker shotguns.

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Thanks Dean, I thought it was a long shot but wanted to share as the heart stamping looks nearly identical.

No Heart…a sun:
 

I guess the sun stamp is the equivalent of the heart on Remington era guns.

Not really Bruce. They are two distinctly different stamps, both often appearing on the same Remington era Parker.

Refer to some of the barrel flat pictures posted by Frank and Dave on previous pages in this thread.



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Guns made for Remington Board members in the 60/70's were often stocked with "Director's wood". It was high grade wood which had some sort of minor blemish which meant it would not go on a high priced gun, but was too good to be put on a standard grade gun. Hence, it would be put off to the side and put on standard grade guns which were ordered by Directors. I have two examples